drivers/crypto/snow3g/rte_snow3g_pmd.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2016 Intel Corporation. All rights reserved.
   5  *
   6  *   Redistribution and use in source and binary forms, with or without
   7  *   modification, are permitted provided that the following conditions
   8  *   are met:
   9  *
  10  *     * Redistributions of source code must retain the above copyright
  11  *       notice, this list of conditions and the following disclaimer.
  12  *     * Redistributions in binary form must reproduce the above copyright
  13  *       notice, this list of conditions and the following disclaimer in
  14  *       the documentation and/or other materials provided with the
  15  *       distribution.
  16  *     * Neither the name of Intel Corporation nor the names of its
  17  *       contributors may be used to endorse or promote products derived
  18  *       from this software without specific prior written permission.
  19  *
  20  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  23  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  24  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <rte_common.h>
  34 #include <rte_config.h>
  35 #include <rte_hexdump.h>
  36 #include <rte_cryptodev.h>
  37 #include <rte_cryptodev_pmd.h>
  38 #include <rte_vdev.h>
  39 #include <rte_malloc.h>
  40 #include <rte_cpuflags.h>
  41
  42 #include "rte_snow3g_pmd_private.h"
  43
  44 #define SNOW3G_IV_LENGTH 16
  45 #define SNOW3G_DIGEST_LENGTH 4
  46 #define SNOW3G_MAX_BURST 8
  47 #define BYTE_LEN 8
  48
  49 /**
  50  * Global static parameter used to create a unique name for each SNOW 3G
  51  * crypto device.
  52  */
  53 static unsigned unique_name_id;
  54
  55 static inline int
  56 create_unique_device_name(char *name, size_t size)
  57 {
  58         int ret;
  59
  60         if (name == NULL)
  61                 return -EINVAL;
  62
  63         ret = snprintf(name, size, "%s_%u", RTE_STR(CRYPTODEV_NAME_SNOW3G_PMD),
  64                         unique_name_id++);
  65         if (ret < 0)
  66                 return ret;
  67         return 0;
  68 }
  69
  70 /** Get xform chain order. */
  71 static enum snow3g_operation
  72 snow3g_get_mode(const struct rte_crypto_sym_xform *xform)
  73 {
  74         if (xform == NULL)
  75                 return SNOW3G_OP_NOT_SUPPORTED;
  76
  77         if (xform->next)
  78                 if (xform->next->next != NULL)
  79                         return SNOW3G_OP_NOT_SUPPORTED;
  80
  81         if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH) {
  82                 if (xform->next == NULL)
  83                         return SNOW3G_OP_ONLY_AUTH;
  84                 else if (xform->next->type == RTE_CRYPTO_SYM_XFORM_CIPHER)
  85                         return SNOW3G_OP_AUTH_CIPHER;
  86                 else
  87                         return SNOW3G_OP_NOT_SUPPORTED;
  88         }
  89
  90         if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER) {
  91                 if (xform->next == NULL)
  92                         return SNOW3G_OP_ONLY_CIPHER;
  93                 else if (xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH)
  94                         return SNOW3G_OP_CIPHER_AUTH;
  95                 else
  96                         return SNOW3G_OP_NOT_SUPPORTED;
  97         }
  98
  99         return SNOW3G_OP_NOT_SUPPORTED;
 100 }
 101
 102
 103 /** Parse crypto xform chain and set private session parameters. */
 104 int
 105 snow3g_set_session_parameters(struct snow3g_session *sess,
 106                 const struct rte_crypto_sym_xform *xform)
 107 {
 108         const struct rte_crypto_sym_xform *auth_xform = NULL;
 109         const struct rte_crypto_sym_xform *cipher_xform = NULL;
 110         enum snow3g_operation mode;
 111
 112         /* Select Crypto operation - hash then cipher / cipher then hash */
 113         mode = snow3g_get_mode(xform);
 114
 115         switch (mode) {
 116         case SNOW3G_OP_CIPHER_AUTH:
 117                 auth_xform = xform->next;
 118
 119                 /* Fall-through */
 120         case SNOW3G_OP_ONLY_CIPHER:
 121                 cipher_xform = xform;
 122                 break;
 123         case SNOW3G_OP_AUTH_CIPHER:
 124                 cipher_xform = xform->next;
 125                 /* Fall-through */
 126         case SNOW3G_OP_ONLY_AUTH:
 127                 auth_xform = xform;
 128                 break;
 129         case SNOW3G_OP_NOT_SUPPORTED:
 130         default:
 131                 SNOW3G_LOG_ERR("Unsupported operation chain order parameter");
 132                 return -EINVAL;
 133         }
 134
 135         if (cipher_xform) {
 136                 /* Only SNOW 3G UEA2 supported */
 137                 if (cipher_xform->cipher.algo != RTE_CRYPTO_CIPHER_SNOW3G_UEA2)
 138                         return -EINVAL;
 139                 /* Initialize key */
 140                 sso_snow3g_init_key_sched(xform->cipher.key.data,
 141                                 &sess->pKeySched_cipher);
 142         }
 143
 144         if (auth_xform) {
 145                 /* Only SNOW 3G UIA2 supported */
 146                 if (auth_xform->auth.algo != RTE_CRYPTO_AUTH_SNOW3G_UIA2)
 147                         return -EINVAL;
 148                 sess->auth_op = auth_xform->auth.op;
 149                 /* Initialize key */
 150                 sso_snow3g_init_key_sched(xform->auth.key.data,
 151                                 &sess->pKeySched_hash);
 152         }
 153
 154
 155         sess->op = mode;
 156
 157         return 0;
 158 }
 159
 160 /** Get SNOW 3G session. */
 161 static struct snow3g_session *
 162 snow3g_get_session(struct snow3g_qp *qp, struct rte_crypto_op *op)
 163 {
 164         struct snow3g_session *sess;
 165
 166         if (op->sym->sess_type == RTE_CRYPTO_SYM_OP_WITH_SESSION) {
 167                 if (unlikely(op->sym->session->dev_type !=
 168                                 RTE_CRYPTODEV_SNOW3G_PMD))
 169                         return NULL;
 170
 171                 sess = (struct snow3g_session *)op->sym->session->_private;
 172         } else  {
 173                 struct rte_cryptodev_session *c_sess = NULL;
 174
 175                 if (rte_mempool_get(qp->sess_mp, (void **)&c_sess))
 176                         return NULL;
 177
 178                 sess = (struct snow3g_session *)c_sess->_private;
 179
 180                 if (unlikely(snow3g_set_session_parameters(sess,
 181                                 op->sym->xform) != 0))
 182                         return NULL;
 183         }
 184
 185         return sess;
 186 }
 187
 188 /** Encrypt/decrypt mbufs with same cipher key. */
 189 static uint8_t
 190 process_snow3g_cipher_op(struct rte_crypto_op **ops,
 191                 struct snow3g_session *session,
 192                 uint8_t num_ops)
 193 {
 194         unsigned i;
 195         uint8_t processed_ops = 0;
 196         uint8_t *src[SNOW3G_MAX_BURST], *dst[SNOW3G_MAX_BURST];
 197         uint8_t *IV[SNOW3G_MAX_BURST];
 198         uint32_t num_bytes[SNOW3G_MAX_BURST];
 199
 200         for (i = 0; i < num_ops; i++) {
 201                 /* Sanity checks. */
 202                 if (unlikely(ops[i]->sym->cipher.iv.length != SNOW3G_IV_LENGTH)) {
 203                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 204                         SNOW3G_LOG_ERR("iv");
 205                         break;
 206                 }
 207
 208                 src[i] = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 209                                 (ops[i]->sym->cipher.data.offset >> 3);
 210                 dst[i] = ops[i]->sym->m_dst ?
 211                         rte_pktmbuf_mtod(ops[i]->sym->m_dst, uint8_t *) +
 212                                 (ops[i]->sym->cipher.data.offset >> 3) :
 213                         rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 214                                 (ops[i]->sym->cipher.data.offset >> 3);
 215                 IV[i] = ops[i]->sym->cipher.iv.data;
 216                 num_bytes[i] = ops[i]->sym->cipher.data.length >> 3;
 217
 218                 processed_ops++;
 219         }
 220
 221         sso_snow3g_f8_n_buffer(&session->pKeySched_cipher, IV, src, dst,
 222                         num_bytes, processed_ops);
 223
 224         return processed_ops;
 225 }
 226
 227 /** Encrypt/decrypt mbuf (bit level function). */
 228 static uint8_t
 229 process_snow3g_cipher_op_bit(struct rte_crypto_op *op,
 230                 struct snow3g_session *session)
 231 {
 232         uint8_t *src, *dst;
 233         uint8_t *IV;
 234         uint32_t length_in_bits, offset_in_bits;
 235
 236         /* Sanity checks. */
 237         if (unlikely(op->sym->cipher.iv.length != SNOW3G_IV_LENGTH)) {
 238                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 239                 SNOW3G_LOG_ERR("iv");
 240                 return 0;
 241         }
 242
 243         offset_in_bits = op->sym->cipher.data.offset;
 244         src = rte_pktmbuf_mtod(op->sym->m_src, uint8_t *);
 245         if (op->sym->m_dst == NULL) {
 246                 op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 247                 SNOW3G_LOG_ERR("bit-level in-place not supported\n");
 248                 return 0;
 249         }
 250         dst = rte_pktmbuf_mtod(op->sym->m_dst, uint8_t *);
 251         IV = op->sym->cipher.iv.data;
 252         length_in_bits = op->sym->cipher.data.length;
 253
 254         sso_snow3g_f8_1_buffer_bit(&session->pKeySched_cipher, IV,
 255                         src, dst, length_in_bits, offset_in_bits);
 256
 257         return 1;
 258 }
 259
 260 /** Generate/verify hash from mbufs with same hash key. */
 261 static int
 262 process_snow3g_hash_op(struct rte_crypto_op **ops,
 263                 struct snow3g_session *session,
 264                 uint8_t num_ops)
 265 {
 266         unsigned i;
 267         uint8_t processed_ops = 0;
 268         uint8_t *src, *dst;
 269         uint32_t length_in_bits;
 270
 271         for (i = 0; i < num_ops; i++) {
 272                 if (unlikely(ops[i]->sym->auth.aad.length != SNOW3G_IV_LENGTH)) {
 273                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 274                         SNOW3G_LOG_ERR("aad");
 275                         break;
 276                 }
 277
 278                 if (unlikely(ops[i]->sym->auth.digest.length != SNOW3G_DIGEST_LENGTH)) {
 279                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 280                         SNOW3G_LOG_ERR("digest");
 281                         break;
 282                 }
 283
 284                 /* Data must be byte aligned */
 285                 if ((ops[i]->sym->auth.data.offset % BYTE_LEN) != 0) {
 286                         ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 287                         SNOW3G_LOG_ERR("Offset");
 288                         break;
 289                 }
 290
 291                 length_in_bits = ops[i]->sym->auth.data.length;
 292
 293                 src = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
 294                                 (ops[i]->sym->auth.data.offset >> 3);
 295
 296                 if (session->auth_op == RTE_CRYPTO_AUTH_OP_VERIFY) {
 297                         dst = (uint8_t *)rte_pktmbuf_append(ops[i]->sym->m_src,
 298                                         ops[i]->sym->auth.digest.length);
 299
 300                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 301                                         ops[i]->sym->auth.aad.data, src,
 302                                         length_in_bits, dst);
 303                         /* Verify digest. */
 304                         if (memcmp(dst, ops[i]->sym->auth.digest.data,
 305                                         ops[i]->sym->auth.digest.length) != 0)
 306                                 ops[i]->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
 307
 308                         /* Trim area used for digest from mbuf. */
 309                         rte_pktmbuf_trim(ops[i]->sym->m_src,
 310                                         ops[i]->sym->auth.digest.length);
 311                 } else  {
 312                         dst = ops[i]->sym->auth.digest.data;
 313
 314                         sso_snow3g_f9_1_buffer(&session->pKeySched_hash,
 315                                         ops[i]->sym->auth.aad.data, src,
 316                                         length_in_bits, dst);
 317                 }
 318                 processed_ops++;
 319         }
 320
 321         return processed_ops;
 322 }
 323
 324 /** Process a batch of crypto ops which shares the same session. */
 325 static int
 326 process_ops(struct rte_crypto_op **ops, struct snow3g_session *session,
 327                 struct snow3g_qp *qp, uint8_t num_ops,
 328                 uint16_t *accumulated_enqueued_ops)
 329 {
 330         unsigned i;
 331         unsigned enqueued_ops, processed_ops;
 332
 333         switch (session->op) {
 334         case SNOW3G_OP_ONLY_CIPHER:
 335                 processed_ops = process_snow3g_cipher_op(ops,
 336                                 session, num_ops);
 337                 break;
 338         case SNOW3G_OP_ONLY_AUTH:
 339                 processed_ops = process_snow3g_hash_op(ops, session,
 340                                 num_ops);
 341                 break;
 342         case SNOW3G_OP_CIPHER_AUTH:
 343                 processed_ops = process_snow3g_cipher_op(ops, session,
 344                                 num_ops);
 345                 process_snow3g_hash_op(ops, session, processed_ops);
 346                 break;
 347         case SNOW3G_OP_AUTH_CIPHER:
 348                 processed_ops = process_snow3g_hash_op(ops, session,
 349                                 num_ops);
 350                 process_snow3g_cipher_op(ops, session, processed_ops);
 351                 break;
 352         default:
 353                 /* Operation not supported. */
 354                 processed_ops = 0;
 355         }
 356
 357         for (i = 0; i < num_ops; i++) {
 358                 /*
 359                  * If there was no error/authentication failure,
 360                  * change status to successful.
 361                  */
 362                 if (ops[i]->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 363                         ops[i]->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 364                 /* Free session if a session-less crypto op. */
 365                 if (ops[i]->sym->sess_type == RTE_CRYPTO_SYM_OP_SESSIONLESS) {
 366                         rte_mempool_put(qp->sess_mp, ops[i]->sym->session);
 367                         ops[i]->sym->session = NULL;
 368                 }
 369         }
 370
 371         enqueued_ops = rte_ring_enqueue_burst(qp->processed_ops,
 372                         (void **)ops, processed_ops);
 373         qp->qp_stats.enqueued_count += enqueued_ops;
 374         *accumulated_enqueued_ops += enqueued_ops;
 375
 376         return enqueued_ops;
 377 }
 378
 379 /** Process a crypto op with length/offset in bits. */
 380 static int
 381 process_op_bit(struct rte_crypto_op *op, struct snow3g_session *session,
 382                 struct snow3g_qp *qp, uint16_t *accumulated_enqueued_ops)
 383 {
 384         unsigned enqueued_op, processed_op;
 385
 386         switch (session->op) {
 387         case SNOW3G_OP_ONLY_CIPHER:
 388                 processed_op = process_snow3g_cipher_op_bit(op,
 389                                 session);
 390                 break;
 391         case SNOW3G_OP_ONLY_AUTH:
 392                 processed_op = process_snow3g_hash_op(&op, session, 1);
 393                 break;
 394         case SNOW3G_OP_CIPHER_AUTH:
 395                 processed_op = process_snow3g_cipher_op_bit(op, session);
 396                 if (processed_op == 1)
 397                         process_snow3g_hash_op(&op, session, 1);
 398                 break;
 399         case SNOW3G_OP_AUTH_CIPHER:
 400                 processed_op = process_snow3g_hash_op(&op, session, 1);
 401                 if (processed_op == 1)
 402                         process_snow3g_cipher_op_bit(op, session);
 403                 break;
 404         default:
 405                 /* Operation not supported. */
 406                 processed_op = 0;
 407         }
 408
 409         /*
 410          * If there was no error/authentication failure,
 411          * change status to successful.
 412          */
 413         if (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 414                 op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
 415
 416         /* Free session if a session-less crypto op. */
 417         if (op->sym->sess_type == RTE_CRYPTO_SYM_OP_SESSIONLESS) {
 418                 rte_mempool_put(qp->sess_mp, op->sym->session);
 419                 op->sym->session = NULL;
 420         }
 421
 422         enqueued_op = rte_ring_enqueue_burst(qp->processed_ops,
 423                         (void **)&op, processed_op);
 424         qp->qp_stats.enqueued_count += enqueued_op;
 425         *accumulated_enqueued_ops += enqueued_op;
 426
 427         return enqueued_op;
 428 }
 429
 430 static uint16_t
 431 snow3g_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
 432                 uint16_t nb_ops)
 433 {
 434         struct rte_crypto_op *c_ops[SNOW3G_MAX_BURST];
 435         struct rte_crypto_op *curr_c_op;
 436
 437         struct snow3g_session *prev_sess = NULL, *curr_sess = NULL;
 438         struct snow3g_qp *qp = queue_pair;
 439         unsigned i;
 440         uint8_t burst_size = 0;
 441         uint16_t enqueued_ops = 0;
 442         uint8_t processed_ops;
 443
 444         for (i = 0; i < nb_ops; i++) {
 445                 curr_c_op = ops[i];
 446
 447                 /* Set status as enqueued (not processed yet) by default. */
 448                 curr_c_op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
 449
 450                 curr_sess = snow3g_get_session(qp, curr_c_op);
 451                 if (unlikely(curr_sess == NULL ||
 452                                 curr_sess->op == SNOW3G_OP_NOT_SUPPORTED)) {
 453                         curr_c_op->status =
 454                                         RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
 455                         break;
 456                 }
 457
 458                 /* If length/offset is at bit-level, process this buffer alone. */
 459                 if (((curr_c_op->sym->cipher.data.length % BYTE_LEN) != 0)
 460                                 || ((curr_c_op->sym->cipher.data.offset
 461                                         % BYTE_LEN) != 0)) {
 462                         /* Process the ops of the previous session. */
 463                         if (prev_sess != NULL) {
 464                                 processed_ops = process_ops(c_ops, prev_sess,
 465                                 qp, burst_size, &enqueued_ops);
 466                                 if (processed_ops < burst_size) {
 467                                         burst_size = 0;
 468                                         break;
 469                                 }
 470
 471                                 burst_size = 0;
 472                                 prev_sess = NULL;
 473                         }
 474
 475                         processed_ops = process_op_bit(curr_c_op, curr_sess,
 476                                                         qp, &enqueued_ops);
 477                         if (processed_ops != 1)
 478                                 break;
 479
 480                         continue;
 481                 }
 482
 483                 /* Batch ops that share the same session. */
 484                 if (prev_sess == NULL) {
 485                         prev_sess = curr_sess;
 486                         c_ops[burst_size++] = curr_c_op;
 487                 } else if (curr_sess == prev_sess) {
 488                         c_ops[burst_size++] = curr_c_op;
 489                         /*
 490                          * When there are enough ops to process in a batch,
 491                          * process them, and start a new batch.
 492                          */
 493                         if (burst_size == SNOW3G_MAX_BURST) {
 494                                 processed_ops = process_ops(c_ops, prev_sess,
 495                                                 qp, burst_size, &enqueued_ops);
 496                                 if (processed_ops < burst_size) {
 497                                         burst_size = 0;
 498                                         break;
 499                                 }
 500
 501                                 burst_size = 0;
 502                                 prev_sess = NULL;
 503                         }
 504                 } else {
 505                         /*
 506                          * Different session, process the ops
 507                          * of the previous session.
 508                          */
 509                         processed_ops = process_ops(c_ops, prev_sess,
 510                                         qp, burst_size, &enqueued_ops);
 511                         if (processed_ops < burst_size) {
 512                                 burst_size = 0;
 513                                 break;
 514                         }
 515
 516                         burst_size = 0;
 517                         prev_sess = curr_sess;
 518
 519                         c_ops[burst_size++] = curr_c_op;
 520                 }
 521         }
 522
 523         if (burst_size != 0) {
 524                 /* Process the crypto ops of the last session. */
 525                 processed_ops = process_ops(c_ops, prev_sess,
 526                                 qp, burst_size, &enqueued_ops);
 527         }
 528
 529         qp->qp_stats.enqueue_err_count += nb_ops - enqueued_ops;
 530         return enqueued_ops;
 531 }
 532
 533 static uint16_t
 534 snow3g_pmd_dequeue_burst(void *queue_pair,
 535                 struct rte_crypto_op **c_ops, uint16_t nb_ops)
 536 {
 537         struct snow3g_qp *qp = queue_pair;
 538
 539         unsigned nb_dequeued;
 540
 541         nb_dequeued = rte_ring_dequeue_burst(qp->processed_ops,
 542                         (void **)c_ops, nb_ops);
 543         qp->qp_stats.dequeued_count += nb_dequeued;
 544
 545         return nb_dequeued;
 546 }
 547
 548 static int cryptodev_snow3g_remove(const char *name);
 549
 550 static int
 551 cryptodev_snow3g_create(const char *name,
 552                 struct rte_crypto_vdev_init_params *init_params)
 553 {
 554         struct rte_cryptodev *dev;
 555         char crypto_dev_name[RTE_CRYPTODEV_NAME_MAX_LEN];
 556         struct snow3g_private *internals;
 557         uint64_t cpu_flags = 0;
 558
 559         /* Check CPU for supported vector instruction set */
 560         if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_SSE4_1))
 561                 cpu_flags |= RTE_CRYPTODEV_FF_CPU_SSE;
 562         else {
 563                 SNOW3G_LOG_ERR("Vector instructions are not supported by CPU");
 564                 return -EFAULT;
 565         }
 566
 567
 568         /* Create a unique device name. */
 569         if (create_unique_device_name(crypto_dev_name,
 570                         RTE_CRYPTODEV_NAME_MAX_LEN) != 0) {
 571                 SNOW3G_LOG_ERR("failed to create unique cryptodev name");
 572                 return -EINVAL;
 573         }
 574
 575         dev = rte_cryptodev_pmd_virtual_dev_init(crypto_dev_name,
 576                         sizeof(struct snow3g_private), init_params->socket_id);
 577         if (dev == NULL) {
 578                 SNOW3G_LOG_ERR("failed to create cryptodev vdev");
 579                 goto init_error;
 580         }
 581
 582         dev->dev_type = RTE_CRYPTODEV_SNOW3G_PMD;
 583         dev->dev_ops = rte_snow3g_pmd_ops;
 584
 585         /* Register RX/TX burst functions for data path. */
 586         dev->dequeue_burst = snow3g_pmd_dequeue_burst;
 587         dev->enqueue_burst = snow3g_pmd_enqueue_burst;
 588
 589         dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
 590                         RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
 591                         cpu_flags;
 592
 593         internals = dev->data->dev_private;
 594
 595         internals->max_nb_queue_pairs = init_params->max_nb_queue_pairs;
 596         internals->max_nb_sessions = init_params->max_nb_sessions;
 597
 598         return 0;
 599 init_error:
 600         SNOW3G_LOG_ERR("driver %s: cryptodev_snow3g_create failed", name);
 601
 602         cryptodev_snow3g_remove(crypto_dev_name);
 603         return -EFAULT;
 604 }
 605
 606 static int
 607 cryptodev_snow3g_probe(const char *name,
 608                 const char *input_args)
 609 {
 610         struct rte_crypto_vdev_init_params init_params = {
 611                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_QUEUE_PAIRS,
 612                 RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_SESSIONS,
 613                 rte_socket_id()
 614         };
 615
 616         rte_cryptodev_parse_vdev_init_params(&init_params, input_args);
 617
 618         RTE_LOG(INFO, PMD, "Initialising %s on NUMA node %d\n", name,
 619                         init_params.socket_id);
 620         RTE_LOG(INFO, PMD, "  Max number of queue pairs = %d\n",
 621                         init_params.max_nb_queue_pairs);
 622         RTE_LOG(INFO, PMD, "  Max number of sessions = %d\n",
 623                         init_params.max_nb_sessions);
 624
 625         return cryptodev_snow3g_create(name, &init_params);
 626 }
 627
 628 static int
 629 cryptodev_snow3g_remove(const char *name)
 630 {
 631         if (name == NULL)
 632                 return -EINVAL;
 633
 634         RTE_LOG(INFO, PMD, "Closing SNOW 3G crypto device %s"
 635                         " on numa socket %u\n",
 636                         name, rte_socket_id());
 637
 638         return 0;
 639 }
 640
 641 static struct rte_vdev_driver cryptodev_snow3g_pmd_drv = {
 642         .probe = cryptodev_snow3g_probe,
 643         .remove = cryptodev_snow3g_remove
 644 };
 645
 646 RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_SNOW3G_PMD, cryptodev_snow3g_pmd_drv);
 647 RTE_PMD_REGISTER_ALIAS(CRYPTODEV_NAME_SNOW3G_PMD, cryptodev_snow3g_pmd);
 648 RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_SNOW3G_PMD,
 649         "max_nb_queue_pairs=<int> "
 650         "max_nb_sessions=<int> "
 651         "socket_id=<int>");